let child_process = require('child_process');
child_process.execFile('node', ['--version'], function(error, stdout, stderr){
    if(error){
        throw error;
    }
    console.log(stdout);
});

child_process.execFile('node', ['--version'], function(error, stdout, stderr){
    if(error){
        throw error;
    }
    console.log(stdout);
});